I haven't tried to do that, but I'm not aware of any reason why you couldn't make windows 10 have a similar file explorer ui. Depending on how you did it with 7, the same methods may work in Windows 10.

yes, open file explorer, click on the view icon on the top left corner, then click on the options icon on the top right corner. Once there choose wich option you want in "open file explorer to" select "this pc"

yes, open file explorer, click on the view icon on the top left corner, then click on the options icon on the top right corner. Once there choose wich option you want in "open file explorer to" select "this pc"

Its possible to totally remove the ribbon without using 3rd party software? I was sure it was not possible otherwise. On my windows 7 I used 'Windows 7 Command Bar Tweaker' to permanently remove it. I couldn't do it without in Windows 7. I don't have Windows 10 yet but want to make sure first. I don't want screen space wasted with the UI. I might get an extra hdd to test first.